OAI SIG Coverage

[kinlane]

We could use a story on the SIGs that have emerged, and a roundup of how to get involved.

[kinlane]

Travel Showcase - https://www.openapis.org/blog/2021/10/25/a-good-travel-experience-begins-with-one-single-booking-portal-how-open-apis-are-leading-the-way

[kinlane]

Finance Showcase - https://www.openapis.org/blog/2021/11/03/announcing-open-finance-a-new-openapi-special-interest-group